If you see double solid lines on two-ane roadways you should know that

Needed fast 15 points the process of natural selection favors certain characteristics in organisms, while it selects against other characteristics. what would happen if there was zero variation between all of the organisms on earth? a. organisms would evolve to increase variety b. natural selection would operate faster c. less food would be available d. evolution through natural selection would not occur

Because its government strictly controls its economy, north korea has a economy. a. command b. mixed c. traditional d. free market

How can studying economics us make better choices about how to use scare resources